Is it permissible for a married person to read the book "Creativity in the Art of Enjoyment" to learn about sexual culture?

Learning the etiquette of marital relations and intercourse is permissible in Islamic law, and there are allusions to it in the Quran and Sunnah (definition). However, the prevailing characteristic of religious texts is allusion rather than explicit statement, and generalization rather than detailed elaboration. Therefore, there is no need to read books that elaborate on these matters in a way that might be harmful rather than beneficial, as human nature is sufficient to understand how to satisfy the sexual instinct.